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   Re: [xml-dev] Generality of HTTP

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On Tue, Jan 22, 2002 at 08:26:13PM +0000, Al Snell wrote:
> As are many other things, mind. Never ever forget that almost every UNIX
> install (*certainly* ever open source Unix - Linux, NetBSD, FreeBSD, and
> OpenBSD, and probably Minix too) comes with an ONC RPC implementation.
> These things have been in operation for ages. NFS works over ONC RPC, as
> does NIS, and a few minority protocols. It's the backbone of a LOT of
> working systems out there.

  Now count the use of them, and count the use of HTTP.
Moreover basically people are trying to get rid of them rather than
base more developpement on it.

> Really? Compared to what? I've never seen this... HTTP, like all TCP-based
> protocols, seems to deal very badly with high packet loss.
> Consider a stream of requests coming in over a TCP connection. If one
> packet is missing, all packets after that one will be delayed until the
> missing packet is retransmitted. They sit in kernel memory, buffered,
> while the server process is blocked waiting for the missing packet.
> This sucks.

  Geez we managed to find out the last UDP supporter out there.
Even NFS (truely a piece of crap from a definition point of view,
ask the people debugging nfs servers about it) tries as much
as possible to be deployed over TCP. Except AFS where it's still
in use, and some multimedia protocols, people are eager to use
TCP protocols as soon as they have to carry data over a WAN.


Daniel Veillard      | Red Hat Network https://rhn.redhat.com/
veillard@redhat.com  | libxml Gnome XML XSLT toolkit  http://xmlsoft.org/
http://veillard.com/ | Rpmfind RPM search engine http://rpmfind.net/


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